1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid
- CAS No.
- 90-20-0
- Chemical Name:
- 1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid
- Synonyms
- H Acids;c.i.35570;kyselinah;1-Naphthol-8-amino-3,6-disulfonicacid;1-Amino-8-naphthol-3,6-disulphonicacid;8-AMINO-1-NAPHTHOL-3,6-DISULFONIC ACID;1-AMINO-8-NAPHTHOL-3,6-DISULFONIC ACID;kyselina8-amino-1-naftol-3,6-disulfonova;kyselina1-amino-8-naftol-3,6-disulfonova;1-Amino-8-hydroxy-3,6-disulfonaphthalene
- CBNumber:
- CB7306275
- Molecular Formula:
- C10H9NO7S2
- Molecular Weight:
- 319.31
- MDL Number:
- MFCD00035728
- MOL File:
- 90-20-0.mol
- MSDS File:
- SDS
| Melting point | >300 °C(lit.) |
|---|---|
| Density | 1.6832 (rough estimate) |
| refractive index | 1.7640 (estimate) |
| solubility | DMSO (Slightly, Heated), Methanol (Slightly), Water (Slightly) |
| form | Solid |
| pka | -0.95±0.40(Predicted) |
| color | Light Beige to Beige |
| CAS DataBase Reference | 90-20-0(CAS DataBase Reference) |
| FDA UNII | 4WUM31ES4U |
| EPA Substance Registry System | 2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy- (90-20-0) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|---|---|
| Signal word | Warning |
| Hazard statements | H302+H332-H315-H319-H335 |
| Precautionary statements | P271-P260-P280 |
| Hazard Codes | Xi |
| Risk Statements | 36/37/38 |
| Safety Statements | 26-36 |
| WGK Germany | 3 |
| HS Code | 2922210060 |
1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid price
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Matrix Scientific | 074462 | 4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid 95+% | 90-20-0 | 5g | $25 | 2021-12-16 | Buy |
| AK Scientific | K640 | 4-Amino-5-hydroxy-2,7-naphthalenedisulfonicacid | 90-20-0 | 25g | $38 | 2021-12-16 | Buy |
| Biosynth Carbosynth | FA40913 | 4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid | 90-20-0 | 10g | $65 | 2021-12-16 | Buy |
| Matrix Scientific | 074462 | 4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid 95+% | 90-20-0 | 25g | $75 | 2021-12-16 | Buy |
| Biosynth Carbosynth | FA40913 | 4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid | 90-20-0 | 25g | $120 | 2021-12-16 | Buy |
1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid Chemical Properties,Uses,Production
Chemical Properties
1-Amino-8-hydroxynaphthalene-3,6-disulfonic acid [90-20-0]. (4-amino-5-hydroxynaphthalene-2,7-disulfonic acid), H acid, C10H9NO7S2, Mr 319.3, is usually isolated as its monosodium salt [5460-09-3], a gray powder that is slightly soluble in cold water and readily soluble in hot water; the disodium salt is very soluble in water. With diazo compounds, H acid couples ortho to the amino group under acid conditions and ortho to the hydroxyl group under alkaline conditions. Bisazo derivatives are formed by stepwise acid and alkaline coupling, with the much slower acid coupling being performed first.
Uses
4-Amino-5-hydroxy-2,7-naphthalenedisulfonic Acid is useful for preparing reactive dyes.
Purification Methods
A slightly alkaline solution of Na2CO3 (ca 22g) in water (litmus) is added to a solution of 100g of the dry acid in 750mL of hot distilled water, followed by 5g of activated charcoal and 5g of Celite. The suspension is stirred for 10minutes and filtered by suction. The acid is then precipitated by adding ca 40mL of conc HCl (solution is blue to Congo Red), then filter it by suction through a shark skin filter circular sheet (or hardened filter paper) and wash it with 100mL of distilled water. The purification process is repeated. The acid is dried overnight in an oven at 60o and stored in a dark bottle The diethylamine salt has m 306-307o(dec, from aqueous EtOH). [Post & Moore Anal Chem 31 1872 1959]. [Beilstein 14 H 840, 14 I 758, 14 II 502, 14 III 2292, 14 IV 2824.]
1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid Preparation Products And Raw materials
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Changzhou waston chemical technology Co.,Ltd | +86-051985861892 +8618112881323 | info@wastonchem.com | China | 237 | 58 |
| Capot Chemical Co.,Ltd. | 571-85586718 +8613336195806 | sales@capotchem.com | China | 29797 | 60 |
| Shanghai Daken Advanced Materials Co.,Ltd | +86-371-66670886 | info@dakenam.com | China | 15957 | 58 |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | info@tianfuchem.com | China | 21689 | 55 |
| Hefei TNJ Chemical Industry Co.,Ltd. | +86-0551-65418679 +86-18949832763 | info@tnjchem.com | China | 2989 | 55 |
| Shanghai Zheyan Biotech Co., Ltd. | 18017610038 | zheyansh@163.com | CHINA | 3620 | 58 |
| Hubei Jusheng Technology Co.,Ltd. | 18871490254 | linda@hubeijusheng.com | CHINA | 28180 | 58 |
| Xiamen AmoyChem Co., Ltd | +86-592-6051114 +8618959220845 | sales@amoychem.com | China | 6387 | 58 |
| Hubei xin bonus chemical co. LTD | 86-13657291602 | linda@hubeijusheng.com | CHINA | 22968 | 58 |
| Shandong chuangyingchemical Co., Ltd. | 18853181302 | sale@chuangyingchem.com | CHINA | 5909 | 58 |
View Lastest Price from 1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2023-10-09 | 1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid
90-20-0
|
US $0.00 / kg | 1kg | 98% | according to customer's requirements | Changzhou waston chemical technology Co.,Ltd | |
 |
2023-04-25 | 1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid
90-20-0
|
US $50.00 / kg | 1kg | 99% | 100 tons | Hebei Duling International Trade Co. LTD | |
 |
2022-07-29 | 1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid
90-20-0
|
US $1.10 / g | 1g | 99.00% | 100 Tons Min | Dideu Industries Group Limited |
-
- 1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid
90-20-0
- US $0.00 / kg
- 98%
- Changzhou waston chemical technology Co.,Ltd
-
- 1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid
90-20-0
- US $50.00 / kg
- 99%
- Hebei Duling International Trade Co. LTD
-
- 1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid
90-20-0
- US $1.10 / g
- 99.00%
- Dideu Industries Group Limited
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